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Error - The URL is not valid

The URL is not valid

A URL generally allows access to a resource on a server. This resource is mainly an HTML page of a WEB site that will be interpreted by the browser, but it can also be a PDF document, an image or even a file to download.

The URL respects a precise syntax, the minimal format is :

protocol://(subdomain.)domain/(path)(?parameters)

  • the protocol specifies the means of communication with the server, for a web site, it is : "http" or "https".
  • the sub-domain, which is optional, coupled with the domain allows to define the site: "www.exemple.com", "example.com".
  • the path allows to retrieve a specific resource from the server: "/", "/contact" or even "/basket".
  • optional parameters allow to send information to servers (it is recommended not to use them for SEO)

Examples of valid URLs :

  • https://cocolyze.com/
  • http://amazon.com
  • https://www.google.com/search?client=firefox

Examples of invalid URLs :

  • cocolyze.com: missing protocol "https://"
  • https:amazon.com: bad protocol separator: "://".
  • https://google : invalid website address : "google.fr"

Also, only certain characters are allowed, this aspect is less important because robots and browsers automatically encode them. For example the URL "https://café.com/meilleur-café" becomes "https://xn--caf-dma.com/meilleur-caf%c3%a9" (browsers display the "human" version of the URL, i.e. with the characters not supported in a decoded way).

An invalid URL does not allow access to a page, so it is necessary to :

  • check its syntax
  • check its access from a browser
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